/* 仿Bootstrap基础样式 */
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial,sans-serif;
  line-height: 1.6;
  margin: 20px;
  background-color: #f8f9fa;
}

.container {
  max-width: 600px;
  margin: 0 auto;
  background: white;
  padding: 30px;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.form-group {
  margin-bottom: 1rem;
}

label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: #495057;
}

.form-control {
  display: block;
  width: 100%;
  padding: 0.375rem 0.75rem;
  font-size: 1rem;
  line-height: 1.5;
  color: #495057;
  background-color: #fff;
  border: 1px solid #ced4da;
  border-radius: 0.25rem;
  transition: border-color 0.15s ease-in-out;
}

.form-control:focus {
  border-color: #80bdff;
  outline: 0;
  box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

.form-check {
  position: relative;
  display: block;
  padding-left: 1.25rem;
  margin-bottom: 0.5rem;
}

.form-check-input {
  position: absolute;
  margin-left: -1.25rem;
  margin-top: 0.3rem;
}

.btn {
  display: inline-block;
  font-weight: 400;
  text-align: center;
  white-space: nowrap;
  vertical-align: middle;
  padding: 0.375rem 0.75rem;
  font-size: 1rem;
  line-height: 1.5;
  border-radius: 0.25rem;
  transition: all 0.15s ease-in-out;
}

.btn-primary {
  color: #fff;
  background-color: #007bff;
  border: 1px solid #007bff;
}

.btn-primary:hover {
  background-color: #0069d9;
  border-color: #0062cc;
}

.btn-secondary {
  color: #fff;
  background-color: #6c757d;
  border: 1px solid #6c757d;
}

.btn-secondary:hover {
  background-color: #5a6268;
  border-color: #545b62;
}

.center {
  text-align: center;
}
